The fossil record provides only a limited amount of certain kinds of evidence (primarily hard tissues such as skeletons and shells, and ichnites such as tracks), limiting the power of interpretations of behaviour. Palaeontologists have only a tiny amount of the data that would be available to an ethologist

studying an extant organism. Some kinds of palaeontological data are readily available, but costly or time consuming to acquire or may damage the specimens (e.g. histological thin sections of bone, or synchotron scanning of fossils). Furthermore, PI3K Inhibitor Library all fossils specimens are subject to the filter of taphonomy that can potentially profoundly alter the available data, presenting misleading pictures of the evidence (e.g. lamellibranch shells having suffered drilling from predators transport further than do intact ones, Lever et al., 1961). Detailed studies or exceptional specimens can potentially reveal much information (e.g. the potential to separate out at what time various tracks

were laid down relative to one another – Milner, 2005, evidence for transport of material – Voorhies, 1969, and to distinguish between trample marks or bite marks – Fiorillo, 1984) and support for a conjecture. However, these must be put in the context of the specimens, a correct understanding and appreciation of behaviour, and framed as a specific hypothesis. They Tyrosine Kinase Inhibitor Library cell line must also be formulated in an appropriate manner that does not immediately lead to a false premise being created. Given the limitations of palaeontological data, we would advocate that formulated hypotheses need not be testable in the present based on the then available data, but at least have the capacity to be tested on the basis of future finds or analyses. Here we outline some previous problems affecting hypotheses about palaeobehaviours. We do not intend to overtly criticize the studies cited as examples, but rather draw attention to potential pitfalls

that may have been previously overlooked. Note that not all of these examples may ultimately be incorrect; however, they are not supported by the data as suggested: (1)  False dichotomy or premise. Mutually exclusive hypotheses are useful as they allow Glycogen branching enzyme the evidence for only a single concept to be used to infer the state of another. However, such relationships must truly be antagonistic, or a false dichotomy is created and evidence for one hypothesis incorrectly used as evidence against another. For example, Taylor et al. (2010) showed that Senter’s (2007) claim of a dichotomy between sexual selection and feeding envelope increase in sauropod dinosaur necks was false. Thus Senter’s arguments in favour of sexual selection did not rule out a functional role.